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Samsung Dryer Error Code 1 AC

Reviewed by the ApplianceErrors Editorial Team · Verified against manufacturer service documentation · Last verified: June 11, 2026
⚠ High Severity 🔧 Easy DIY

Air circulation error — insufficient airflow detected through the drum

The most common cause of the 1 AC error on a Samsung dryer is clogged exhaust vent or duct run (~45% of cases); start with: clean the lint screen and housing.

💰 DIY cost: $0–$30 👨‍🔧 Pro cost: $120–$250 Save $120+ by doing it yourself
Samsung Dryer error code 1 AC on the display panel
How the 1 AC code appears on a Samsung dryer display

What Does Error Code 1 AC Mean on a Samsung Dryer?

Air circulation error — insufficient airflow detected through the drum.

The control board interprets 1 AC when the drum's temperature climbs faster than a properly vented load should allow. Because Samsung infers airflow from the rate of temperature rise rather than a direct flow sensor, any restriction—packed lint screen, clogged duct, or a stalled blower—causes heat to accumulate near the thermistor and trips the code. It fires preemptively to protect the machine, distinguishing it from cooling-related codes like Clg or heater faults such as HE, which point to different subsystems.

Models affected: Samsung dryers that display alphanumeric fault codes, including many DVE/DVG electric and gas models such as DVE45R6100C, DVE45T6000W, DVE50BG8300V, and DVG45T3200W
What owners report: Owners commonly report 1 AC appearing partway through a cycle, especially with longer or wall-routed vent runs and after several months without a deep vent cleaning. A packed lint screen or a kinked duct behind the dryer is a frequent false-alarm trigger, and many find a full vent cleaning clears the code quickly.

What Causes Error Code 1 AC?

Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:

  1. 1
    Clogged exhaust vent or duct run 45% of cases
  2. 2
    Lint screen or screen housing packed with lint 25% of cases
  3. 3
    Crushed or kinked flexible duct behind the dryer 20% of cases
  4. 4
    Blower wheel obstructed or worn 10% of cases

How to Fix Samsung Dryer Error Code 1 AC

🔧 Easy DIY Est. time: 10–20 min
⚡ Safety first: Unplug the appliance before opening any panels or touching internal components.
  1. 1

    Clean the lint screen and housing

    Remove the screen, wash it with warm soapy water, and vacuum the slot it sits in.

  2. 2

    Clean the full vent run

    Disconnect the duct from the dryer and brush/vacuum the entire run to the outside hood; confirm the exterior flap opens freely.

    🔩 Dryer vent cleaning brush kit ($15–$30)
  3. 3

    Inspect the blower wheel

    With power disconnected, remove the front panel and check the blower for lint wads, socks, or a wheel slipping on its shaft.

    ⚠️ Unplug the dryer (or shut off gas and unplug) before opening the cabinet.

How to Reset Error Code 1 AC

Clear the airflow restriction, then unplug for 5 minutes and restart the cycle.

Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.

Full Samsung dryer reset guide → Enter diagnostic mode → Symptom guide: Dryer not drying →

Did this guide fix your appliance?

When to Call a Professional

If the vent run is long, routed through walls, or 1 AC returns after cleaning, hire a vent cleaning service or technician.

Average professional repair cost for this issue: $120–$250

Related Error Codes

Clg
Clog warning — exhaust duct restriction detected (early D80/D90 indicator)
⚠ Medium Severity
PS
Duct sensor blockage — vent/moisture sensor reading abnormal due to restricted exhaust
⚠ Medium Severity
HE
Heater fault — drum not heating or overheating
⚠ High Severity

Find Replacement Parts

Use these links to find the exact replacement parts for your Samsung Dryer:

🔩
Search PartSelect
Samsung Dryer repair parts
🔧
Search RepairClinic
Step-by-step video guides

External links — ApplianceErrors.com is not affiliated with these retailers.

More Samsung Dryer Error Codes

tE Thermistor (temperature sensor) failure OD Vent blockage detected bE2 Button error — a control-panel key is stuck 9C1 Power supply error — abnormal/low line voltage 9E1 Line voltage abnormality — supply voltage out of range AC Communication error — main and sub control boards not communicating

Frequently Asked Questions

Can I keep using my Samsung Dryer when error 1 AC appears? +
It is not advisable. The dryer may still power on, but running it while 1 AC is active can worsen the airflow fault or damage related parts. Treat it as a soon-as-possible repair.
What most commonly causes 1 AC on a Samsung Dryer? +
Across reported Samsung dryer repairs, the most frequent is clogged exhaust vent or duct run (45% of cases), lint screen or screen housing packed with lint (25%), then crushed or kinked flexible duct behind the dryer (20%). Check them in that order before replacing any parts.
1 AC keeps coming back after a reset — what should I check next? +
A reset only clears the stored 1 AC fault; if it returns, the airflow problem is still present. Move on to the physical checks — clean the lint screen and housing, then clean the full vent run — since the code will reappear until the root cause is resolved. This is a beginner-friendly job needing only basic hand tools.
How much does it cost to fix Samsung Dryer error 1 AC? +
A DIY repair typically runs $0–$30 in parts, versus $120–$250 for a professional service call, so handling it yourself saves around $120. Expect the work to take about 10–20 minutes.
Which Samsung Dryer models show error 1 AC? +
1 AC is documented on Samsung dryers that display alphanumeric fault codes, including many DVE/DVG electric and gas models such as DVE45R6100C, DVE45T6000W, DVE50BG8300V, and DVG45T3200W. Other units sharing the same control platform can display it too, so the fixes here generally transfer across the series.

Sources & References

Content verified against manufacturer service documentation. Last verified: June 11, 2026.

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